Grease-cup.



A. R. PRIBIL.

GREASE CUP.

APPLICATION man AUG.4. 1911.

Patented Dec. 14, 1915.

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GREASE CUP.

APPLICATION FILED AUG.4, 19x1 1,163,50. Patented Dec.14, 1915.

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COLUMBIA PLANOGRAPH C0, WASHINGTON. D. C.

ITD AE PATENT @FFTQE.

ALEXIS E. PRIBIL, 0F DETROIT, MICHIGAN, ASSIGNOR, BY IVIESNE ASSIGNMENTS, TO GEORGE W. BOWEN, OF AUBURN, NEW YORK.

GREASE-CUP.

Application filed August 4,1911.

To all whom it may concern Be it known that I, ALEXIS R. PRIBIL, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Grease-Cups, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to grease cups of the force-feed type, and it has for its object the provision of an improved device of this character which comprises means whereby the movable cap is automatically locked against accidental outward movement.

Further objects of the invention will hereinafter appear and be particularly defined in the claim.

The invention has been clearly illustrated in the accompanying drawings, in which similar characters denote similar parts, and in which Figure 1 is a horizontal section of a grease-cup embodying my invention, on line 1, l of Fig. 2; Fig. 2 is a. vertical central section thereof, Fig. 3 is a side view of the locking drip-cup which forms a part of the device; Figs. 4 to 6 inclusive illustrate a modification, Fig. 4 being a horizontal section on line 4, 4 of Fig. 5; Fig. 5 represents a side view partly broken away, and Fig. 6 is a top view of the modified form of dripcup.

Referring to the grease cup shown in Figs. 1 to 3 inclusive, 10 denotes the base member of the grease reservoir having its upper end externally screwthreaded to engage an internal thread of the inverted cup-shaped cap member 11 of the reservoir, the entire chamber formed by said base and cap members being adapted to be'filled with grease or other heavy lubricant, so that when the cap is screwed downward (as for instance by manipulating the hand-wings 12), the grease will be forced out through a discharge duct 13. The base 10 has a neck 14 which, in connection with the side-wall of a drip-cup 15, forms an annular chamber 16 disposed immediately below the joint line of the screw-threads above mentioned, so that any leakage through this joint will fall into the chamber and be there retained. The inner surface of the bottom 15 of the drip cup is engaged with an annular shoulder 20 on the neck 14 and has an aperture 17 through Specification of Letters Patent.

Patented Dec. 141, 1915.

Serial No. 642,228.

which extends a screw-nipple 18 depending from the shoulder 20, said nipple forming a part of the base and carrying a nut 19 engaging the outer face of the bottom 15 whereby said bottom will be firmly held in contact with the shoulder 20, said nipple 18 serves as a means for attaching the grease cup to a part to be lubricated and said base is shown as provided with a pair of lugs 21 for the engagement of a wrench for turning the same.

The outer surface of the cap 11 is cylindrical and fits or is substantially in contact with the inside of the drip-cup, so that the thread-joint as well as the interior of the drip-cup are guarded against dirt.

It will be noted that the upper edge of the drip-cup 15 is substantially on a level with the top of the base and that the annular flange of the cap is disposed between and contacts with the base and the drip-cup, and also that the space between the top of the cap and the top of the base is substantially equal to the space between the underside of the outer cap flange and the bottom of the drip cup, so that consequently the cap may be screwed down until its top strikes against the upper end of the base.

Means are provided to prevent the cap from accidental retrograde or upward movement, in which case the contents of the reservoir would finally become exposed and in some instances even thrown out, as for instance when the grease cup is connected with moving parts such as locomotive connecting rods and the like. These means are preferably attached to or form a part of the drip cup, the vertical wall of which is punched to form a resilient lip 22 adapted to have its upper free end engage any one of a series of vertical depressions or grooves 23 formed in the cap, the organization being such that the latter may be screwed clownward by hand without difficulty but its accidental retrograde rotation will be prevented.

In Figs. 1 to 6 inclusive is shown a modification of the cap-retaining means, the upper margins of the drip cup 15 being slitted and drawn to form a resilient horizontal tongue 21 having intermediate its ends an indentation to form a resisting-member 25 adapted to engage the recesses or grooves 26 of the cap 11. From Fig. 4 it will be apparent that the cap (shown in section) can readily be rotated in the direction of arrow a, the resilient tongue permitting this move ment; While When the cap is to be rotated backward, considerable force must be applied thereto corresponding to the camfaced construction of the grooves.

Suitable means may be employed to hold the drip-cup against rotation relatively to the reservoir Without relying upon the frictional contact caused by the nut 19, such means being herein illustrated as one or more pins 27 connecting said cup-bottom and reservoir and held against falling out by the nut 19.

Many changes may be made in the particular construction and organization Without departing from the spirit of the invention.

I claim:

In a grease cup and in combination, a base member including a body portion threaded externally adjacent its open end, and an externally threaded axially disposed stem of Copies of this patent may be obtained for reduced diameter whereby a shoulder is formed on the base portion around the stem, a cup-shaped member having an axial opening in the bottom thereof for receiving the stem, a nut threaded on the stem for clamping the bottom of the cup-shaped member against said shoulder, the cup-shaped member having a continuous Wall at its open end, a tongue struck from the side Wall of the cup-shaped member and provided with an internally projecting part, and a cap member threaded on the base and provided with a peripheral depression for coacting With the projection on the tongue, substantially as described. 7

In testimony whereof I affix my signature in presence of two Witnesses.

ALEXIS R. PRIBILQ Witnesses F. E. ERNsT, OTTO F. BARTHEL.

Washington, D. 0. 

